Some dogs like Kongs, some don't. Mine don't pay any attention to them unless they are stuffed with food. Daphne the Destructo-Rott has the black "indestructible" large Kongs in pieces in less than an hour.

He's your dog, you know what size would fit him best. If he doesn't like it they have a 100% money back guarantee.

All of the kongs have a description on them to tell you what size you need for what dog. For safety it would be better to have one slightly too large than too small if your stuck choosing between 2 sizes. I have 2 dogs a beagle and a bluetick about 40 lbs size difference so I had to get them both the size that fit the larger size dog so no one chokes when I'm not there.

He doesn't like the barbell ones very much, and I've never seen one at any of the stores around town. If I get him a bigger Kong I'm not sure if he'll treat it like a bouncy ball. I don't think he'd even like it. The plush toys, well, I got one for him and he likes it, but not very much. He seems to like pom-poms, but I can't find any that are strong enough so he can't pull them apart.

Kong also sells a biscuit ball that you can cram milkbones in different ways to keep your dog busy. and it rolls around like a ball. it is made for small and medium size dogs. They have these planet kong goodie ships too. here is a link that shows these different kong products.

But I'm still wondering, if I get the wrong Kong for my dog, and my dog doesn't like it, will they refund my money?

And also, my dog needs an in between Kong. One that is a little smaller than medium. Thats why I'd want to get him the small one, because he'd probably like it more than a larger thing that he could hardly carry around.

Good news. Today I went to the store and bought him a Kong. He loves it. I filled it with treats and he chewed them all out, and now he's just playing nicely on the floor with it. Thanks for all the help. I think that he's going to have a new favourite toy from now on